/*-
* #%L
* Slice - Core
* $Id:$
* $HeadURL:$
* %%
* Copyright (C) 2012 Cognifide Limited
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
package com.cognifide.slice.core.internal.adapter;
import java.util.Collection;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.adapter.AdapterFactory;
import org.apache.sling.api.resource.Resource;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.component.ComponentContext;
import com.cognifide.slice.api.context.RequestContextProvider;
import com.cognifide.slice.api.injector.InjectorConfig;
import com.cognifide.slice.api.injector.InjectorsRepository;
import com.cognifide.slice.core.internal.injector.InjectorListener;
import com.cognifide.slice.core.internal.scanner.SliceResourceScanner;
import com.google.inject.Injector;
/**
* This component is responsible for creation and destruction of the AdapterFactory services. Every time a
* injector is created, it looks for all modules implementing AdaptableModule interface and creates a separate
* AdapterFactory for each module it founds.
*
* @author Tomasz Rękawek
*
*/
@Component(immediate = true)
@Service
public class AdapterFactoryManager implements InjectorListener {
@Reference
private InjectorsRepository repository;
@Reference
private RequestContextProvider requestContextProvider;
private Map<String, ServiceRegistration> registrationByInjector;
private BundleContext bundleContext;
private SliceResourceScanner scanner;
@Activate
public void activate(ComponentContext componentContext) {
bundleContext = componentContext.getBundleContext();
registrationByInjector = new HashMap<String, ServiceRegistration>();
scanner = new SliceResourceScanner(bundleContext);
}
@Deactivate
public void deactivate() {
for (ServiceRegistration adapterFactory : registrationByInjector.values()) {
adapterFactory.unregister();
}
}
@Override
public void injectorCreated(Injector injector, InjectorConfig config) {
Collection<Class<?>> classes = scanner.findSliceResources(config.getBundleNameFilter(),
config.getBasePackage());
ServiceRegistration registration = createAdapterFactory(classes, config.getName());
registrationByInjector.put(config.getName(), registration);
}
@Override
public void injectorDestroyed(Injector injector, InjectorConfig config) {
ServiceRegistration registration = registrationByInjector.remove(config.getName());
if (registration != null) {
registration.unregister();
}
}
private ServiceRegistration createAdapterFactory(Collection<Class<?>> classes, String name) {
String[] adapterClasses = new String[classes.size()];
int i = 0;
for (Class<?> clazz : classes) {
adapterClasses[i++] = clazz.getName();
}
SliceAdapterFactory factory = new SliceAdapterFactory(name, repository, requestContextProvider);
Dictionary<String, Object> properties = new Hashtable<String, Object>();
properties.put(AdapterFactory.ADAPTABLE_CLASSES, new String[] { Resource.class.getName() });
properties.put(AdapterFactory.ADAPTER_CLASSES, adapterClasses);
ServiceRegistration registration = bundleContext.registerService(AdapterFactory.class.getName(),
factory, properties);
return registration;
}
}